package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (StatusConstant.DISABLE.equals(employee.getStatus())) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("3、Service线程ID：" + Thread.currentThread().getId() );
        //1、组装Employee
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        //2、设置Employee的默认值（员工状态、创建信息、更新信息）
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
      /*  employee.setCreateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        //3、调用mapper，进行保存
        this.employeeMapper.save(employee);
    }

    /**
     * 分页条件查询
     *
     * @param pageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO pageQueryDTO) {
        //1、利用PageHelper设置分页条件
        PageHelper.startPage(pageQueryDTO.getPage(),pageQueryDTO.getPageSize(),"create_time desc");

        //2、调用mapper进行分页条件查询
        Page<Employee> page = this.employeeMapper.pageQuery(pageQueryDTO);

        //3、组装PageResult并返回
        PageResult pageResult = new PageResult(page.getTotal(),page.getResult());
        return pageResult;
    }

    /**
     * 启用或者禁用员工账号
     *
     * @param id
     * @param status
     */
    @Override
    public void startOrStop(Long id, Integer status) {
        //1、封装更新参数
        Employee employee = Employee.builder().id(id).status(status).updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId()).build();

        //2、调用mapper进行更新
        this.employeeMapper.update(employee);
    }

    /**
     * 根据ID查询员工信息
     *
     * @param id
     * @return
     */
    @Override
    public Employee queryById(Long id) {
        //1、调用mapper根据ID查询员工
        Employee employee = this.employeeMapper.queryById(id);
        return employee;
    }

    /**
     * 修改员工
     *
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        //1、组装Employee
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        //2、设置Employee的默认值（员工状态、创建信息、更新信息）
       /* employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        //3、调用mapper进行更新
        this.employeeMapper.update(employee);
    }

}
